DataVXAdvanced MaterialsPaper
journal article·2024-10Open access

Ultra‐Weak Polarization‐Strain Coupling Effect Boosts Capacitive Energy Storage

Leiyang Zhang, Ruiyi Jing, Yunyao Huang, Yule Yang, Yang Li, Mingyang Tang, Shuyao Cao, Zibin Chen, Feng Gao, Yuxiao Du, Shiyu Zhou, Jianwei Zhao, Shiyu Liu, Dawei Wang, Shujun Zhang, Li Jin

Advanced Materials· Volume 36· Issue 41
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Source abstract

Abstract

Abstract In pulse power systems, multilayer ceramic capacitors (MLCCs) encounter significant challenges due to the heightened loading electric field (E), which can lead to fatigue damage and ultrasonic concussion caused by electrostrictive strain. To address these issues, an innovative strategy focused on achieving an ultra‐weak polarization‐strain coupling effect is proposed, which effectively reduces strain in MLCCs. Remarkably, an ultra‐low electrostrictive coefficient (Q33) of 0.012 m4 C−2 is achieved in the composition 0.55(Bi0.5Na0.5)TiO3‐0.45Pb(Mg1/3Nb2/3)O3, resulting in a significantly reduced strain of 0.118% at 330 kV cm−1. At the atomic scale, the local structural heterogeneity leads to an expanded and loose lattice structure, providing ample space for large ionic displacement polarization instead of lattice stretching when subjected to the applied E. This unique behavior not only promotes energy storage performance (ESP) but also accounts for the observed ultra‐low Q33 and strain. Consequently, the MLCC device exhibits an impressive energy storage density of 14.6 J cm−3 and an ultrahigh efficiency of 93% at 720 kV cm−1. Furthermore, the superior ESP of the MLCC demonstrates excellent fatigue resistance and temperature stability, making it a promising solution for practical applications. Overall, this pivotal strategy offers a cost‐effective solution for state‐of‐the‐art MLCCs with ultra‐low strain‐vibration in pulse power systems.
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Research context

Ceramics & glasses

OpenAlex topics: Ferroelectric and Piezoelectric Materials · Multiferroics and related materials · Acoustic Wave Resonator Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education School of Electronic Science and Engineering Xi'an Jiaotong University Xi'an 710049 China

College of Physics and Electronic Information Yan'an University Yan'an 716000 China

Department of Industrial and Systems Engineering The Hong Kong Polytechnic University Hong Kong China

State Key Laboratory of Solidification Processing School of Materials Science and Engineering Northwestern Polytechnical University Xi'an 710072 China

Shenzhen Institute of Advanced Electronic Materials Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China

College of Physics and Materials Science Tianjin Normal University Tianjin 300387 China

Functional Materials and Acousto‐Optic Instruments Institute School of Instrumentation Science and Engineering Harbin Institute of Technology Harbin 150080 China

Institute for Superconducting and Electronic Materials Faculty of Engineering and Information Sciences University of Wollongong Wollongong NSW 2500 Australia

Funding

National Natural Science Foundation of China · Key Research and Development Projects of Shaanxi Province

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